With less than a day left before the final vote on Supreme Court nominee Brett Kavanaugh’s confirmation, the Trump-nominated judge appears to have locked down the votes he needs to get onto the Supreme Court. His nomination, roiled by accusations of sexual misconduct from Palo Alto professor Christine Blasey Ford and several other women, narrowly cleared a procedural vote Friday, with the Senate voting 51-49 to advance the nomination and invoke cloture. The final vote will take place Saturday.

Kavanaugh will likely become the next Supreme Court justice — and help shape American jurisprudence for a generation — because he won the support of at least two of the following five key senators. Here’s a look at how they voted Friday and what their decision-making process has been like as this historic confirmation process nears its end:

Sen. Jeff Flake. (Photo by Win McNamee/Getty Images)

Jeff Flake, R-Arizona

On procedural vote: Yes

On final vote: Yes

Why he’s important to watch: Flake told reporters Friday morning that he plans to vote for Kavanaugh on Saturday “unless something big changes.” He had played an outsized role in Kavanaugh’s tumultuous confirmation process, originally announcing he supported the nominee before breaking with party leaders and moving to require an FBI investigation into the allegations against Kavanaugh last week. Flake, a conservative who has clashed with Trump and is not running for re-election this year, was moved by confrontations with sexual assault survivors in the Senate hallway last week. But he said that he believes the final FBI investigation was thorough enough and found no corroborating evidence for Blasey Ford’s claims.

Sen. Lisa Murkowski (R-AK) (Mark Wilson/Getty Images)

Lisa Murkowski, R-Alaska

On procedural vote: No

On final vote: No

Why she’s important to watch: Murkowski has played her cards close to her chest throughout the process. One of the two pro-choice Republican women in the Senate, she has said she does not believe Kavanaugh would undo the Roe v. Wade decision, something Democrats and activists have argued. But Murkowski voted no on the procedural vote Friday, and said she would vote no on Saturday as well, telling reporters that she “took the very, very difficult vote that I did. I believe that Brett Kavanaugh is a good man. I believe he is a good man, it just may be that in my view he’s not the right man for the court at this time.”

Sen. Susan Collins, (R-Maine) (AP Photo/Robert F. Bukaty, File)

Susan Collins, R-Maine

On procedural vote: Yes

On final vote: Yes

Why she’s important to watch: Collins, a pro-choice Republican who’s one of the Senate’s most moderate members, will likely give Kavanaugh the deciding vote he needs to get onto the Supreme Court. She said in a dramatic speech on the Senate floor Friday that she supports Kavanaugh because she believes he is qualified and will not repeal Roe v. Wade. As to the sexual misconduct accusations against him, “I do not believe these charges can fairly prevent Judge Kavanaugh from serving on the court,” Collins said, appealing to the presumption of innocence. Collins has been a focus of attention over the Kavanaugh nomination since the very beginning: Anti-Kavanaugh activists have raised over $1 million that they say they’ll donate to Collins’ opponent in her next re-election race, but Collins has called that strategy an attempt at “extortion” and stressed it would not affect her vote.

Sen. Joe Manchin, D-W.Va. (AP Photo/Alex Brandon, File)

Joe Manchin, D-West Virginia

On procedural vote: Yes

On final vote: Yes

Why he’s important to watch: Manchin, who’s seen as the most moderate Senate Democrat and is running for re-election this year in a state that Trump won by 42 points, was the only Democrat to vote yes on Kavanaugh’s confirmation during Friday’s procedural vote and says he’ll also vote for him in the final vote on Saturday. “I have found Judge Kavanaugh to be a qualified jurist who will follow the Constitution and determine cases based on the legal findings before him,” Manchin said in a statement. Manchin has led the polls in his re-election contest, and isn’t considered as vulnerable as some of his Democratic colleagues in other Trump states. Protesters chanted “shame at you” as he left hi Senate office Friday afternoon.

Sen. Heidi Heitkamp, D-N.D. (AP Photo/J. Scott Applewhite, File)

Heidi Heitkamp, D-North Dakota

On procedural vote: No

On final vote: No

Why she’s important to watch: Heitkamp is probably the most vulnerable incumbent Democratic senator in the country running for re-election this year. She surprised observers Thursday when she said she would oppose Kavanaugh’s nomination — a potentially politically perilous decision in a state that Trump won by 36 points. In her announcement, Heitkamp highlighted the emotional testimony from Blasey Ford. “Our actions right now are a poignant signal to young girls and women across our country,” Heitkamp said. “When I listened to Dr. Ford testify, I heard the voices of women I have known throughout my life who have similar stories of sexual assault and abuse.”